Real-time scale-factor calibration for cold-atom gyroscope based on point-source interferometry
Real-time scale-factor calibration for cold-atom gyroscope based on point-source interferometry
Point-source interferometry (PSI) is a promising technique that enables the realization of compact and multi-Axis cold-Atom inertial sensors. However, scale-factor errors in the rotational signal, due to the shape and size of the initial atomic distribution, constitute a major drawback. In this paper, we present a method for calibrating the rotational scale-factor. This method relies on the application of a known bias rotation and a compensation scheme that decouples the PSI sensor from the vehicle's rotational dynamics. We employ a Kalman filter protocol to track the scale-factor error, paving the way for real-Time implementation of the calibration method. Through simulations, we demonstrate the effectiveness of the method and the stabilization of the PSI sensor scale-factor.
Calibration, Cold atoms, Inertial sensor, Kalman filter, Point-source interferometry, Scale factor
Dedes, Nikolaos
aa6b8f4d-bd3a-4b1c-834d-14126ddba38f
Harvey, David
63656713-8675-49cf-9169-367d18111a6c
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d
23 April 2024
Dedes, Nikolaos
aa6b8f4d-bd3a-4b1c-834d-14126ddba38f
Harvey, David
63656713-8675-49cf-9169-367d18111a6c
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d
Dedes, Nikolaos, Harvey, David and Freegarde, Tim
(2024)
Real-time scale-factor calibration for cold-atom gyroscope based on point-source interferometry.
In 2024 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL).
IEEE.
4 pp
.
(doi:10.1109/INERTIAL60399.2024.10502035).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Point-source interferometry (PSI) is a promising technique that enables the realization of compact and multi-Axis cold-Atom inertial sensors. However, scale-factor errors in the rotational signal, due to the shape and size of the initial atomic distribution, constitute a major drawback. In this paper, we present a method for calibrating the rotational scale-factor. This method relies on the application of a known bias rotation and a compensation scheme that decouples the PSI sensor from the vehicle's rotational dynamics. We employ a Kalman filter protocol to track the scale-factor error, paving the way for real-Time implementation of the calibration method. Through simulations, we demonstrate the effectiveness of the method and the stabilization of the PSI sensor scale-factor.
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More information
e-pub ahead of print date: 23 April 2024
Published date: 23 April 2024
Venue - Dates:
11th IEEE International Symposium on Inertial Sensors and Systems, Grand Prince Hotel Hiroshima, Hiroshima, Japan, 2024-03-25 - 2024-03-28
Keywords:
Calibration, Cold atoms, Inertial sensor, Kalman filter, Point-source interferometry, Scale factor
Identifiers
Local EPrints ID: 490160
URI: http://eprints.soton.ac.uk/id/eprint/490160
PURE UUID: 9789e51f-76f6-43be-8bfa-1f0def7a37ac
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Date deposited: 16 May 2024 16:34
Last modified: 31 Jul 2024 01:39
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Author:
David Harvey
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